: Use the DMG extraction to build a bootable recovery drive. Hardware Compatibility
macOS Big Sur 11.2.1, released in February 2021, acts as a crucial maintenance update addressing a 2016-2017 MacBook Pro charging bug, a serious sudo security vulnerability, and installer disk space verification issues. The update is available in two builds, with the updated 11.2.1 (20D75) specifically addressing a bug that allowed insufficient storage during installation, leading to potential data loss. For a detailed breakdown of the update's features and fixes, visit Macworld . macos big sur 1121 installer dmg
While version 11.2.1 was primarily a maintenance and security update, it was essential for maintaining the health of older hardware: : Use the DMG extraction to build a bootable recovery drive